Breast-pump.



Patented Mar. l2, l90l.

J. H. HOOVER.

BREAST PUMP.

(Application filed Aug. 20, 1990.)

(N0 Model.)

- wmvss s llV VEN'TOH w 4 g w g ATTORNEY JOSEPH H. HOOVER, OF WATERLOO,IOWA.

BREAST-PUM P.

SPECIFICATION forming part of Letters Patent N0. 669,583, dated March12, 1901.

Application filed August 20, 1900. Serial No. 27,377- (No model.)

To all whom it may concern:

Be it known that I, J osnrn H. HOOVER, a citizen of the United States ofAmerica, and a resident of Waterloo, Blackhawk county, Iowa, haveinvented certain new and useful Iinpro vements in Breast-Pumps, of whichthe following is a specification.

My invention relates to breastpumps, and has for its object to provide abreast-pump having a flexible air-duct tube interposed between the meansused for exhausting the air from the vacuum-tube and the nipple inclosedby the rubber shield, said air-duct tube being stiffened and kept fromcollapsing while in use by means of a spiral spring or other equivalentmeans contained therein.

This invention is an improvement-upon the pattern of breast-pumppatented by me May 3, 1898, under No. 603,564.

The object I accomplish in the manner and by the means more fullypointed out and described hereinafter, reference being made to theaccompanying drawings.

Similar numbers refer to similar parts throughout both views.

Figure 1 is a top plan View of the breastpump. Fig. 2 is a centrallongitudinal section of the air-duct tube and perforated handhold.

My invention consists of the usual funnelshaped tube 1, provided withthe usual nipple-shield 5 and a milk-cu p 6. On the small end of thetube 1 a flexible tube 2, made of rubber or-any other suitable material,is removably secured. The other end of the flexible tube 2 is removablysecured to a rigid tube 8, forming part of the perforated handhold 3. 4represents an air-exhaust pump constructed in any usual manner, whichhas its tube 11 introduced within and secured to the sides of theperforation 9 of the spoolshaped handhold 3. This handhold 3 may beconstructed in any other desired form. 7

is a spiral spring introduced within the interior cavity 10 of theflexible air-tube 2.

Instead of a spiral spring any other equivalent form of stiffening-bracemay be used to distend the wall of the flexible air-tube 2. The functionof this spring 7 is to keep the walls of the tube 2 distended when inuse and under compression from the Weight of the air on its exteriorsurface, and also to lend a sufficient stiffening to the tube.

The operation of my improved breast-pump is the same as is usual withsuch instruments, but is simplified by the removal of the collapsibleair-chamber and the substitution therefor of a perforated handhold andplacing the spiral spring within the air-duct tube. The air-exhaust pumpmay thus be more easily used when inclined in any direction to suit theconvenience of manipulation, and there is no collapsible air-chamber tobecome fouled or ruptured.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. A breast-pump having a flexible air-tube distended by a spiralspring, and a perforated handhold, interposed between the flexibleair-tube and an air-exhaust pump, substantially as shown and described.

2. A breast-pump consisting of a funnelshaped tube having amilk-receptacle formed on its circumference, a perforated nippleshieldsecured on the flared end of said tube, a flexible tube containing aspiral spring connected with said funnel-shaped tube, a perforatedhandhold removably connected with said flexible tube, and an air-exhaustpump distinct from, but connected with said perforated handhold,substantially as shown and described.

Signed at Waterloo, Iowa, this 16th day of August, 1900.

JOSEPH H. HOOVER.

Witnessesi J. S. TUTHILL, L. E. PARK.

